I used to hate hand luggage and would always check my bags, I was therefore very fast to board and de-plane, I took up no extra space and got on and off as quick as I could.
It didn't take long to realize I was being a chump, I ended up waiting for ages anyway, only to see those who loaded up carry-on breeze through the airport to a taxi while I had to wait for bags.
So rather than try and beat them, I joined them and now only have carry-on.
I would not be upset if they banned all carry-on minus a purse or plastic bag with a book in it.
The boarding and alighting would be much faster for everyone, but of course this won't happen as mentioned earlier, they save money on baggage handlers and the poor hosties have to do a lot of the packing.